code: def test_sphere_to_simplex_after_simplex_to_sphere(
      self, n_points, atol
  ):
      point = self.data_generator.random_point(n_points)
  
      point_sphere = self.space.metric.simplex_to_sphere(point)
      point_ = self.space.metric.sphere_to_simplex(point_sphere)
  
      self.assertAllClose(point_, point, atol=atol)
  
imports: import pytest
  import geomstats.backend
  from geomstats.test.vectorization import generate_vectorization_data
  from geomstats.test_cases.geometry.base import LevelSetTestCase
  from geomstats.test_cases.geometry.riemannian_metric import RiemannianMetricTestCase
  from geomstats.test_cases.information_geometry.base import InformationManifoldMixinTestCase
label_desc: Use image node_id 6 for calling the MultinomialMetricTestCase obj's underlying member method code with example usage: obj.test_sphere_to_simplex_after_simplex_to_sphere(n_points, atol) without return types